it is a '''100% FAKE''' site. Firefox updates are '''only''' done internally in Firefox or by download from mozilla.org or www.mozilla.org/firefox/all https://support.mozilla.org/en-US/kb/i-found-fake-firefox-update Sadly anybody can make a page with a Firefox logo and claim things like "New Firefox Version!!!" or "Urgent Firefox Update!!!". They hope to trick less experience Windows users into downloading the file being served on page and running it before scanning it by a antivirus software. For the fake urgent update page mentioned in article these pages are triggered by some Ads particularly on some Yahoo pages and have been occurring since mid last year. They just use random disposable sites for the fake malware downloads so it cannot be just taken down so to speak. They have been doing a similar urgent update scam to Google Chrome users on Windows also for just as long. According to a whois search this fake browserfresh website was only just created on Nov 3rd, 2017 which has been pretty typical for these fake sites in being created shortly before it's disposable use.